{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:LYR3W26BU7YXESDCO77C3WSRUA","short_pith_number":"pith:LYR3W26B","canonical_record":{"source":{"id":"1009.5714","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2010-09-28T22:39:50Z","cross_cats_sorted":["astro-ph.CO","hep-ph"],"title_canon_sha256":"2b5717ff3505eb1b7df029cffe0b7bb9a7eafbf11a3b432ad3b01746dd0f8345","abstract_canon_sha256":"10aaf628e0af1741125a6be52883de777621e00e5513eea4d1387307a02035a5"},"schema_version":"1.0"},"canonical_sha256":"5e23bb6bc1a7f172486277fe2dda51a03916e3b28187e5cfe18e7e505ebfa669","source":{"kind":"arxiv","id":"1009.5714","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1009.5714","created_at":"2026-05-18T02:05:15Z"},{"alias_kind":"arxiv_version","alias_value":"1009.5714v2","created_at":"2026-05-18T02:05:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1009.5714","created_at":"2026-05-18T02:05:15Z"},{"alias_kind":"pith_short_12","alias_value":"LYR3W26BU7YX","created_at":"2026-05-18T12:26:10Z"},{"alias_kind":"pith_short_16","alias_value":"LYR3W26BU7YXESDC","created_at":"2026-05-18T12:26:10Z"},{"alias_kind":"pith_short_8","alias_value":"LYR3W26B","created_at":"2026-05-18T12:26:10Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:LYR3W26BU7YXESDCO77C3WSRUA","target":"record","payload":{"canonical_record":{"source":{"id":"1009.5714","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2010-09-28T22:39:50Z","cross_cats_sorted":["astro-ph.CO","hep-ph"],"title_canon_sha256":"2b5717ff3505eb1b7df029cffe0b7bb9a7eafbf11a3b432ad3b01746dd0f8345","abstract_canon_sha256":"10aaf628e0af1741125a6be52883de777621e00e5513eea4d1387307a02035a5"},"schema_version":"1.0"},"canonical_sha256":"5e23bb6bc1a7f172486277fe2dda51a03916e3b28187e5cfe18e7e505ebfa669","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:05:15.846911Z","signature_b64":"A7kNVKIz/UIGnr7O69GomuKvsYTXf8a53Ez35JQiutwJqCKbDrnxxiTHpRoU7eRY6P9ppsCGq/RNKH2C2g88Aw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5e23bb6bc1a7f172486277fe2dda51a03916e3b28187e5cfe18e7e505ebfa669","last_reissued_at":"2026-05-18T02:05:15.846211Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:05:15.846211Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1009.5714","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:05:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HjCA50xv2f13i8s5C8qgXPjyEVR/OAYrj1ji5h5F197mIyLm23tn3Mp4FvbbWX8JpC3DiQWO6/FZ+6GuTySqDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-11T09:30:14.563433Z"},"content_sha256":"9eb831e5c308d238f1764ca878e0da0840447861f872053335a332a355192678","schema_version":"1.0","event_id":"sha256:9eb831e5c308d238f1764ca878e0da0840447861f872053335a332a355192678"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:LYR3W26BU7YXESDCO77C3WSRUA","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"New constraints for heavy axion-like particles from supernovae","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO","hep-ph"],"primary_cat":"astro-ph.HE","authors_text":"Leanne D. Duffy, Maurizio Giannotti, Rafaela Nita","submitted_at":"2010-09-28T22:39:50Z","abstract_excerpt":"We derive new constraints on the coupling of heavy pseudoscalar (axion-like) particles to photons, based on the gamma ray flux expected from the decay of these particles into photons. After being produced in the supernova core, these heavy axion-like particles would escape and a fraction of them would decay into photons before reaching the Earth. We have calculated the expected flux on Earth of these photons from the supernovae SN 1987A and Cassiopeia A and compared our results to data from the Fermi Large Area Telescope. This analysis provides strong constraints on the parameter space for axi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1009.5714","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:05:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"eOfSgfStpRaYMr5Ch1xFPyrBEcZxtdgMDZFmg92rB5KLMFg+qsI5HPRjNCyzGXISMK3xsbpuG1C/xM4MZwHsCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-11T09:30:14.563794Z"},"content_sha256":"b0eebcc4d30cd3451d9e6e071cf0eeabbf8eff469c1722b41d3bdc9741ba53cc","schema_version":"1.0","event_id":"sha256:b0eebcc4d30cd3451d9e6e071cf0eeabbf8eff469c1722b41d3bdc9741ba53cc"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/LYR3W26BU7YXESDCO77C3WSRUA/bundle.json","state_url":"https://pith.science/pith/LYR3W26BU7YXESDCO77C3WSRUA/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/LYR3W26BU7YXESDCO77C3WSRUA/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-06-11T09:30:14Z","links":{"resolver":"https://pith.science/pith/LYR3W26BU7YXESDCO77C3WSRUA","bundle":"https://pith.science/pith/LYR3W26BU7YXESDCO77C3WSRUA/bundle.json","state":"https://pith.science/pith/LYR3W26BU7YXESDCO77C3WSRUA/state.json","well_known_bundle":"https://pith.science/.well-known/pith/LYR3W26BU7YXESDCO77C3WSRUA/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:LYR3W26BU7YXESDCO77C3WSRUA","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"10aaf628e0af1741125a6be52883de777621e00e5513eea4d1387307a02035a5","cross_cats_sorted":["astro-ph.CO","hep-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2010-09-28T22:39:50Z","title_canon_sha256":"2b5717ff3505eb1b7df029cffe0b7bb9a7eafbf11a3b432ad3b01746dd0f8345"},"schema_version":"1.0","source":{"id":"1009.5714","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1009.5714","created_at":"2026-05-18T02:05:15Z"},{"alias_kind":"arxiv_version","alias_value":"1009.5714v2","created_at":"2026-05-18T02:05:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1009.5714","created_at":"2026-05-18T02:05:15Z"},{"alias_kind":"pith_short_12","alias_value":"LYR3W26BU7YX","created_at":"2026-05-18T12:26:10Z"},{"alias_kind":"pith_short_16","alias_value":"LYR3W26BU7YXESDC","created_at":"2026-05-18T12:26:10Z"},{"alias_kind":"pith_short_8","alias_value":"LYR3W26B","created_at":"2026-05-18T12:26:10Z"}],"graph_snapshots":[{"event_id":"sha256:b0eebcc4d30cd3451d9e6e071cf0eeabbf8eff469c1722b41d3bdc9741ba53cc","target":"graph","created_at":"2026-05-18T02:05:15Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"We derive new constraints on the coupling of heavy pseudoscalar (axion-like) particles to photons, based on the gamma ray flux expected from the decay of these particles into photons. After being produced in the supernova core, these heavy axion-like particles would escape and a fraction of them would decay into photons before reaching the Earth. We have calculated the expected flux on Earth of these photons from the supernovae SN 1987A and Cassiopeia A and compared our results to data from the Fermi Large Area Telescope. This analysis provides strong constraints on the parameter space for axi","authors_text":"Leanne D. Duffy, Maurizio Giannotti, Rafaela Nita","cross_cats":["astro-ph.CO","hep-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2010-09-28T22:39:50Z","title":"New constraints for heavy axion-like particles from supernovae"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1009.5714","kind":"arxiv","version":2},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:9eb831e5c308d238f1764ca878e0da0840447861f872053335a332a355192678","target":"record","created_at":"2026-05-18T02:05:15Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"10aaf628e0af1741125a6be52883de777621e00e5513eea4d1387307a02035a5","cross_cats_sorted":["astro-ph.CO","hep-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2010-09-28T22:39:50Z","title_canon_sha256":"2b5717ff3505eb1b7df029cffe0b7bb9a7eafbf11a3b432ad3b01746dd0f8345"},"schema_version":"1.0","source":{"id":"1009.5714","kind":"arxiv","version":2}},"canonical_sha256":"5e23bb6bc1a7f172486277fe2dda51a03916e3b28187e5cfe18e7e505ebfa669","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5e23bb6bc1a7f172486277fe2dda51a03916e3b28187e5cfe18e7e505ebfa669","first_computed_at":"2026-05-18T02:05:15.846211Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:05:15.846211Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"A7kNVKIz/UIGnr7O69GomuKvsYTXf8a53Ez35JQiutwJqCKbDrnxxiTHpRoU7eRY6P9ppsCGq/RNKH2C2g88Aw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:05:15.846911Z","signed_message":"canonical_sha256_bytes"},"source_id":"1009.5714","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9eb831e5c308d238f1764ca878e0da0840447861f872053335a332a355192678","sha256:b0eebcc4d30cd3451d9e6e071cf0eeabbf8eff469c1722b41d3bdc9741ba53cc"],"state_sha256":"563885bafb039a86a32121da5fd6e39f93d5499513b279dce6c041ccff1c890e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kLfROYF4n5mVagoOv9u5wnk9PuKF4cRRCQW7ZnQPkcGqvO5OIvhvRLHUVuoqIjp4X6enIvoaVjm6rKV4sHcmDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-11T09:30:14.565830Z","bundle_sha256":"15bccecf2ac18809b4fd61ebf39176cf5ce31d55e1095800021a47ccb1bca56b"}}